Home / 12,858.35-17,750.98-12,171.57

Finding the Fourth Proportional to 12,858.35, 17,750.98 and 12,171.57

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Solution

The fourth proportional to 12,858.35, 17,750.98 and 12,171.57 is: 16,802.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.35 : 17,750.98 = 12,171.57 : x
  2. Step 2: Convert to fraction form
    12,858.35/17,750.98 = 12,171.57/x
  3. Step 3: Cross multiply
    12,858.35x = 17,750.98 × 12,171.57
  4. Step 4: Simplify right side
    12,858.35x = 216,057,244.29
  5. Step 5: Solve for x
    x = 216,057,244.29/12,858.35
  6. Step 6: Final answer
    x = 16,802.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.